Team Vision for System-Level Design Phase
During the systems design phase, in addition to accomplishing our goals from phase I and completing all of the assigned deliverables, we brainstormed different methods it would take to accomplish the necessary tasks to participate in typical recreational activities such as soccer and bowling and also how to attach OLE, Overcomer Lower-Extremity, to the wheelchair and walker. We were able to compare and contrast our current prototype to our concept development. This allowed us to see what areas could be improved. We are still pursuing our desired goal of improving the current design as well as moving the project from prototype to manufacturing. Paperwork for the Institutional Review Board approval to conduct testing is entering the final stages and we are collaborating with Overcomer Upper-Extremity team to conduct interviews and get some inputs on our current prototype.
Updated Phase I Documentation
Our project has no direct comparison within the target market and we therefore decided to instead benchmark a number of devices that serve a similar purpose to provide physical activity to either physically handicapped or rehabilitation patients.
|Monark Rehab 871E||PowerFit 3000||Resistance Gym 200||"Power Soccer" Guard|
|Cost (USD)||1450||1680||350||330 + Brackets|
|Mounts to Wheelchair||No||Yes||Yes||Yes|
|Mechanical Assistance to User||No||No||No||No|
|Monark||PowerFit||Resistance Gym||Power Soccer|
Please note we have no affiliation with any of the above devices and all devices are property of their respective owners.
In addition for comparison in our Pugh chart we used the customers existing solutions as a baseline model.
Concept Selection Criteria
- Safety (ANSI Compliance)
- Low Manufacturing and Development Cost
- Ease of Manufacturing
- Installation Time
- Power Requirements
- Ball Speed Generated
- Capture Radius
- Accuracy when Passing
- Use of Existing Parts
- Achievable within Time Allowed
- Not all "devices" used all criteria. For example, our selection of clamping devices did not factor in Ball Speed Generated or Capture Radius.
Concept Selection and Development
Feasibility: Prototyping, Analysis, Simulation
Feasibility Concerns for Detailed Design
- Strength based on manufacturing process, installation and design
- Total weight once manufacturing material is selected
- Install time will have to be done through testing - possibly with current prototype for comparison.
Designs and Flowcharts
Systems Level Design
Design Review Materials
Plans and Schedule for Phase III
- Meetings with manufacturing advisors